Belle stevenson



Sept. 3, 1929. w, STEVENSON 1,727,300

WELL GAPPER Filed July 28, 1928 2 Sheets-Sheet 2 he FIE Z F 1 I J A.

PIE -5- 7 7 Suventor Wm i M (I ttomeg Patented Sept. 3, 1929. i f i UNITED STATES PATENT OFFICE.

WALTER IJ- STEVENEON, F LONG BEACH, CALIFORNIA; BELLE. STEVENSON AD- MINISTRATRIX OF SAID HALTER L. STEVENSON, DECEASED.

WELL GAPPER.

Application filed July 28, 1928. Serial No. 296,060.

This im ention relates to improvements are tapped through bosses 11 on the end Wall. 55 in controlling devices for wells, and has for of the casing, theheadsbeing exposed to reits object to provid an improved device ceive a bar or other tool whereby the screws for capping wells to control or stop the flow may be turned. The inner ends of the screws therctrom. l l ith large and powerful wells are provided with a plain portion at 12 which it is often a matter oi diiiiculty to stop the extends loosely through slots 13 in the ends 60 flow therefrom, and the present invention is of the yoke H, so that the yoke can rock with designed to provide a valve with operating respect to the screws. The screws are held to devices comprising screws which are powerthe yoke by means of washers L and M at iul enough to draw the valve to closed posiopposite sides of the yoke, and nuts J on the tion under all. conditions of how and pres extreme end of the screws, and the surfaces of 65 sure. The device includes improved means the yoke bearing against the washers L and for fastening the controlling head to the well M are arched as at 14 to permit the rocking casing and firmly supporting the same in action. The side edges of the valve plate F 5 position at the top of said casing. are rabbeted as indicated at 15 to engage cor Other features of advantage will be apresponding guides G fastened to the under 70 parent from the following description and side of the top of the casing A and forming the accompanying drawings. guldes in which the plate F slides.

In the drawings, Fig. 1 is a front eleva- In use the control head is attached to the tion of the device; Fi 2 is atop plan view; top of the well casing by means of the con- Fig. 3 is a section on the line 33 of Fig.2; nectmg collar G. Then by turning the screws 75 Fig. 4 is a detail in cross section. B the valve plate is drawn across the outlet The dimensions of the various parts may Opening in the top of the head and with a be varied to suit the diameter of the well casclose fit the pressure underneath of the fluid 5 ing or other local conditions and therefore Will seal the plate against its seat, and efthe present drawings and description are infectively cap or close the well. The yoke H tended only for purposes of illustration. will rock or turn to the extent necessary to The head comprises a box like casing A, prevent binding of the valve plate in its extended at one side to permit the valve to be guides and the connections permit a certain 3 opened. This casing has at the bottom a amount of looseness to enable the valve to or collar I) which screws thereon, and the ful, and enable the valve to be closed against lower end of this ring has an up turned heavy flow or pressure. The screws of course threaded flange 7 which screws into a collar may be advanced to open the valve as desired. C havin a smaller diameter at the top which It may be mentioned that the lower neck 6 is screws onto the upper end of the well casing of a diameter suliiciently large to permit the K. The ring D thus has a hook connection valve plate and its connections to be inserted with collar C which is very effective in prethrough the same into the casing after which venting the head being blown oil of the well the guides G are attached by the screws N 40 pipe. and proper connect-ions made.

The top wall of the casing A is flat, except It may also be noted that the casing A is for a neck 8 threaded to receive a cap E by cast in one piece without joints which might means of which the well may be sealed if deleak, the necessary connections being screw sired. threaded on the casing neck. Leakage is thus 45 The valve F consists of a flat plate maprevented.

chined on. the top to fit the surface of the cas- The invention is not limited to the particuing closely, and strengthened if necessary by lar form shown and described, but various cross ribs wh1c-h meet at a hub 9 irom which modifications are possible within the scope projects or depends a pivot stud 10 on which of the following claims.

5 is held, by means of nuts P, a yoke or equaliz- I claim:

ing bar H supported by a washer O. The bar 1. A well capper comprising a valve casing, H ca d, and it connected a sliding i plate in the casing, a pair of at iv is are ind op""" ble screw. orl rig Mil, th: e l k 1 neck 6 threaded to receive a connecting ring seat tightly. The double screws are power- 85 plate, and a yoke pivoted on the stud and connected to the screws for opening and closing the valve plate.

2. A Well capper as in claim 1, the screws being parallel and connected respectively to the ends of the yoke Which is pivoted at its middle to the stud.

3. A Well capper comprising a valve casing, a slidahle valve plate therein having a pivot stud, a cross yoke pivoted on said stud, and independently operable adjusting screws loosely connected to opposite ends of the yoke and extending through a Wall of the easing for opening and closing the valve plate,

t. A Well capper comprising a valve casing having means at the bottom to connect it to a Well tube, a valve-plate therein, in sliding contact With the top of the casing, said plate having a depending stud, a yoke pivoted on the stud, and independently operable screws connected to opposite ends of the yoke and Working through a Wall of the casing for closing and opening the valve plate.

In testimony whereof, I {till my signature.

WALTER L. STEVENSON. 

